Used in biomedical research to measure endothelin receptor A (ET-A) levels in rat samples, this ELISA kit enables the quantification of ET-A expression in endothelial cells, vascular tissues, and blood samples. It is widely applied in cardiovascular studies, particularly in hypertension, heart failure, and vascular remodeling research. The kit supports investigation into endothelial dysfunction and the role of the endothelin system in inflammatory diseases and kidney disorders. It is also used in pharmacological studies to evaluate drug effects on the endothelin pathway in rat models.